f material. It is a the hooped gun and the fully devel- well-known fact that the strength ; oped wire-tube gun, which is repre- and lasting qualities of steel are sented by the piece which forms directly proportional—other things the subject of our accompanying being equal—to the amount of… … these parts themselves. The cast- piece consists of a thin liner which The Core of Involuted Sheets Assembled Ready for Winding. iron gun of the era of the Civil War forms the bore, a segmental tube was formed in one piece, and the best that it could wound with wire, and a jacket. The segmental…
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